A displacement determination device and a determination method for a micro-displacement actuator

Abstract

The present invention discloses a displacement judgment device and judgment method of a micro-displacement actuator, which relates to the field of micro-displacement actuators, including a micro-displacement actuator body, one side of the micro-displacement actuator body is movably connected with a displacement amplification component, one end of the displacement amplification component is movably connected with a displacement prompting component, and the bottoms of the displacement amplification component and the displacement prompting component are both fixedly connected with a base. According to the present invention, when the moving platform generates displacement, the displacement is converted into the rotation amount of the large gear, and when the large gear rotates, the position of the prompting rod is changed, thereby completing the prompting of the displacement amount of the micro-displacement actuator body, making it convenient for operators to judge the displacement amount of the micro-displacement actuator body, thereby solving the problem that the approximate moving range of the micro-displacement actuator body cannot be judged, and conveniently selecting different docking devices according to the micro-displacement actuator body, so that the operation of the micro-displacement actuator body meets the expected effect.

Description

Technical Field

[0001] The present invention relates to the technical field of micro-displacement actuators, and in particular to a displacement determination device and a determination method for a micro-displacement actuator. Background Art

[0002] As people's requirements for precision, speed and efficiency become higher and higher, micro-electromechanical systems (MEMS) as an emerging technology are being used more and more widely. As one of the important components, micro actuators play a key role in realizing tiny mechanical movements and precise force control.

[0003] For example, the Chinese patent publication number CN104953890A, "An excitation moving magneto-magnetic micro-displacement driver", has two main magnetic circuit cores arranged opposite to each other; the auxiliary magnetic circuit core is clamped on the main magnetic circuit core; the mounting seat is fixed at the end of the main magnetic circuit core, on which a drive motor is installed; the S-pole drive permanent magnet and the N-pole drive permanent magnet are accommodated in the main magnetic circuit core, which are respectively installed on the rotating core of the drive motor; the magnetostrictive material and the excitation permanent magnet are respectively clamped between the main magnetic circuit core; the output shaft abuts against one side of the magnetostrictive material and is driven by the magnetostrictive material; the pressure plate is arranged on both sides of the main magnetic circuit core, and a number of clamping bolts are passed between the two pressure plates; a disc spring abuts between the pressure plate and the main magnetic circuit core, and the disc spring is sleeved on the output shaft. The excitation moving magneto-magnetic micro-displacement driver finally achieves micro-displacement output through the above-mentioned structure.

[0004] And as Fig. 9 A mechanical micro-displacement actuator is shown, the micro-displacement actuator includes a micro-displacement actuator body 1, the moving platform 1-1 of the micro-displacement actuator body 1 is connected to the fixed platform 1-3 through three or more SS rods 1-2 (rods with elastic ball pairs at both ends), each SS rod 1-2 is parallel to each other, and its axis is perpendicular to the moving platform 1-1 and the fixed platform 1-3, and a rotary drive mechanism 1-4 is connected between the two platforms, and the rotary drive mechanism 1-4 is used to realize a small rotation of the moving platform 1-1, and the displacement output platform 1-5 of the micro-displacement actuator body 1 is connected to the moving platform 1-1 through a bearing to separate the rotary motion, thereby realizing the output of micro-displacement. Although the micro-displacement actuator can output very small micro-displacements, before actually using the micro-displacement actuator, it is generally necessary to estimate the approximate range of the micro-displacement actuator, so as to facilitate docking with different devices.

[0005] However, when the micro-displacement actuator realizes tiny mechanical movement, due to the small overall range of motion, and the specific state of its actual use must also be taken into consideration, the different uses of docking with different devices. Therefore, in actual use, it may be inconvenient for the operator to estimate the approximate moving range of the micro-displacement actuator, making it inconvenient to select a suitable micro-displacement actuator according to the device, and even docking with an incompatible micro-displacement actuator may occur, which may make the operation of the micro-displacement actuator fail to achieve the expected effect.

[0006] Therefore, how to judge the micro displacement actuator, especially for Fig. 9 Determining the approximate moving range of the micro-displacement actuator shown is a technical problem that needs to be solved by those skilled in the art. Summary of the invention

[0007] The object of the present invention is to provide a device and method for determining the displacement of a micro-displacement actuator, so as to solve the problem that the approximate moving range of the micro-displacement actuator cannot be determined in the above-mentioned background technology.

[0008] To achieve the above-mentioned purpose, as a first aspect, the present invention provides the following technical solutions: a displacement determination device for a micro-displacement actuator, comprising a displacement amplification component, the displacement amplification component is movably connected to a micro-displacement actuator body, one end of the displacement amplification component is movably connected to a displacement prompting component, the bottoms of the displacement amplification component and the displacement prompting component are both fixedly connected to a base, and one end of the base is spliced ​​to one side of a fixed platform of the micro-displacement actuator body;

[0009] The displacement amplification component includes a large gear, a first pulley, a movable block, a docking block and a transmission belt, wherein the first pulley is fixedly mounted on one side of the large gear, one end of the movable block is overlapped on the lower surface of the main moving platform of the micro-displacement actuator, the docking block is rotatably mounted on one side of the movable block, one end of the docking block is clamped in the tooth groove of the large gear, and the transmission belt is movably connected to the first pulley;

[0010] The displacement prompting assembly includes a second pulley, a turntable and a prompting rod. The transmission belt is movably connected to the second pulley. The radius of the second pulley is one quarter to one sixth of the radius of the first pulley. An extension rod is fixedly installed on one side of the second pulley. The other end of the extension rod is fixedly connected to the turntable. The prompting rod is rotatably installed on one side of the turntable. The prompting rod is located at the edge of the turntable. The other end of the prompting rod is overlapped on the upper surface of the base. A prompting plate is fixedly installed on the upper surface of the base. The prompting plate is located at the junction of the base and the prompting rod.

[0011] Preferably, a positioning bracket is fixedly mounted on the upper surface of the base, and the large gear and the first pulley are both rotatably mounted on the outer wall of the positioning bracket.

[0012] Preferably, a first support rod is fixedly mounted on the upper surface of the base, the second pulley is rotatably mounted on one end of the first support rod, one side of the turntable is rotatably connected to a second support rod, and the first support rod and the second support rod are located on the same straight line.

[0013] Preferably, one end of the extension rod is threadedly connected with a connecting block, the connecting block is located at the junction of the second support rod and the turntable, and the second support rod is rotatably connected to the connecting block.

[0014] Preferably, an arc-shaped notch is provided on one side of the connecting block, and one end of the prompt rod is located on one side of the arc-shaped notch.

[0015] Preferably, a movable rotating rod is rotatably connected to the outer wall of the positioning bracket, a torsion spring is fixedly connected between the movable rotating rod and the positioning bracket, and the other end of the movable rotating rod is slidably connected to a supporting rod.

[0016] Preferably, a positioning end is fixedly mounted on one side of the movable block, the positioning end is rotatably connected to one end of the supporting rod, and a positioning plate is fixedly mounted on the other side of the movable block.

[0017] Preferably, a notch is provided on one side of the movable block, a limiting block is rotatably mounted on one side of the positioning plate, and the notch is located at the junction of the movable block and the limiting block.

[0018] Preferably, a spring telescopic rod is fixedly installed inside the limit block, and the other end of the spring telescopic rod is fixedly connected to one end of the docking block.

[0019] As a second aspect of the present invention, a method for determining the displacement of a micro-displacement actuator is provided, comprising the following steps:

[0020] S1. Splice one end of the base to one side of the fixed platform at the bottom of the micro-displacement actuator body, and then push the top of the movable block to the lower surface of the micro-displacement actuator body's moving platform. The movable block is movably connected to the movable rotating rod through the support rod on the positioning end, and the movable rotating rod is supported by the torsion spring, so it can be stably pressed against the lower surface of the micro-displacement actuator body's moving platform. Then start the motor in the micro-displacement actuator body to make the displacement output platform produce a slight displacement. In this process, the moving platform connected to the displacement output platform will synchronously press down the movable block.

[0021] S2, the movable block is connected to the large gear through the docking card block, so when the movable block moves downward, it will push the large gear to rotate with the positioning bracket as the center of the circle, the docking card block is connected to the limit block through the spring telescopic rod, and a notch is provided near the limit block, the notch provides space for the rotation of the limit block, and the spring telescopic rod provides a movable space for the movement of the docking card block, ensuring that the docking card block can push the large gear to rotate while not destroying the structural stability of the movable block itself;

[0022] S3. When the large gear rotates, it will drive the first pulley to rotate at the same time. The first pulley drives the second pulley to rotate through the transmission belt. Since the radius of the first pulley is larger than the radius of the second pulley, the rotation speed of the second pulley is much larger than the rotation speed of the first pulley. When the first pulley rotates once, the second pulley rotates multiple units, thereby amplifying the displacement.

[0023] S4. In the initial situation, one end of the prompt rod will overlap the frontmost prompt piece. There are four prompt pieces in total, corresponding to four prompt ranges respectively. At this time, the prompt rod is overlapped in the first range. When the second pulley rotates, the turntable will be driven to rotate at the same angular velocity through the extension rod, thereby pulling the prompt rod to move on the prompt piece and enter the second range, the third range or the fourth range, so as to facilitate the judgment of the displacement range of the micro-displacement actuator body.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. In the present invention, by docking the displacement amplification component with the micro-displacement actuator body, when the displacement output platform of the micro-displacement actuator body outputs axial displacement, the displacement is converted into the rotation amount of the large gear. When the large gear rotates, it will drive the first pulley to rotate. Since the radius of the first pulley is greater than the radius of the second pulley, the rotation speed of the second pulley will be much greater than the rotation speed of the first pulley. The rotation of the second pulley will change the position of the prompt rod, thereby completing the prompt of the displacement of the micro-displacement actuator body, making it convenient for the operator to judge the displacement of the micro-displacement actuator body, thereby solving the problem that the approximate moving range of the micro-displacement actuator body cannot be judged, and it is convenient to select different docking devices according to the micro-displacement actuator body, so that the operation of the micro-displacement actuator body meets the expected effect.

[0026] 2. In the present invention, a positioning end is arranged on the side of the movable block to connect with the supporting rod on the movable rotating rod. At the same time, a torsion spring is connected between the movable rotating rod and the positioning bracket to form a supporting structure for the movable block, so that the movable block can be stably docked under the moving platform of the micro-displacement actuator body. The presence of the notch and the spring telescopic rod respectively provides a range of motion for the rotation of the limit block and the movement of the docking block, thereby avoiding the jamming between the docking block and the large gear, and ensuring the normal operation of the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure in the first orientation of a displacement determination device of a micro-displacement actuator of the present invention when in use;

[0028] Figure 2 It is a schematic diagram of the third perspective structure of a displacement determination device of a micro-displacement actuator of the present invention when in use;

[0029] Figure 3 It is a front view schematic diagram of a displacement determination device of a micro-displacement actuator of the present invention when in use;

[0030] Figure 4 It is a schematic diagram of the three-dimensional structure of a displacement determination device of a micro-displacement actuator in a first orientation according to the present invention;

[0031] Figure 5 It is a schematic diagram of the third perspective structure of a displacement determination device for a micro-displacement actuator according to the present invention;

[0032] Figure 6 It is a schematic diagram of the position structure of a large gear, a first pulley and a second pulley of a displacement determination device of a micro-displacement actuator of the present invention;

[0033] Figure 7 It is a schematic diagram of the connection structure between a movable block and a movable rotating rod of a displacement determination device of a micro-displacement actuator of the present invention;

[0034] Figure 8 The present invention is a schematic diagram of the main structure of a movable block of a displacement determination device of a micro-displacement actuator.

[0035] Fig. 9 It is a schematic diagram of the three-dimensional structure of a micro-displacement actuator.

[0036] In the figure: 1. micro-displacement actuator body; 2. displacement amplification component; 3. displacement prompt component; 4. base; 5. second support rod; 6. first support rod; 7. positioning bracket; 8. prompt sheet; 21. large gear; 22. first pulley; 23. movable block; 24. docking block; 25. transmission belt; 26. movable rotating rod; 27. supporting rod; 28. positioning end; 29. ​​positioning plate; 210. limit block; 211. notch; 212. spring telescopic rod; 31. second pulley; 32. turntable; 33. prompt rod; 34. connecting block; 35. arc notch; 36. extension rod; 1-1. moving platform; 1-2. SS rod; 1-3. fixed platform; 1-4. rotary drive mechanism; 1-5. displacement output platform. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Embodiment 1

[0039] Below Fig. 9 The micro-displacement actuator shown is used as a subject to be judged to specifically introduce the displacement amount judgment device of the micro-displacement actuator of the present invention.

[0040] according to Figure 1-Figure 8 As shown, a displacement judgment device for a micro-displacement actuator is disclosed, which includes a displacement amplification component 2, which is movably connected to one side of the micro-displacement actuator body 1, and one end of the displacement amplification component 2 is movably connected to a displacement prompting component 3, and the bottoms of the displacement amplification component 2 and the displacement prompting component 3 are fixedly connected to a base 4, and one end of the base 4 is spliced ​​to one side of the fixed platform of the micro-displacement actuator body 1.

[0041] The displacement amplification component 2 includes a large gear 21, a first pulley 22, a movable block 23, a docking block 24 and a transmission belt 25. The first pulley 22 is fixedly mounted on one side of the large gear 21, one end of the movable block 23 is overlapped on the lower surface of the moving platform of the micro-displacement actuator body 1, the docking block 24 is rotatably mounted on one side of the movable block 23, and one end of the docking block 24 is clamped in the tooth groove of the large gear 21. The transmission belt 25 is transmission-connected to the first pulley 22.

[0042] The displacement prompting assembly 3 includes a second pulley 31, a rotating disk 32 and a prompting rod 33, and the transmission belt 25 is connected to the second pulley 31. The radius of the second pulley 31 is one-fourth to one-sixth of the radius of the first pulley 22. An extension rod 36 is fixedly installed on one side of the second pulley 31, and the other end of the extension rod 36 is fixedly connected to the rotating disk 32. The prompting rod 33 is rotatably installed on one side of the rotating disk 32, the prompting rod 33 is located at the edge of the rotating disk 32, and the other end of the prompting rod 33 is overlapped on the upper surface of the base 4. A prompting sheet 8 is fixedly installed on the upper surface of the base 4, and the prompting sheet 8 is located at the intersection of the base 4 and the prompting rod 33.

[0043] In this embodiment, the movable block 23 is first rotated to press it down and keep it at a lower position, and then the fixed platform at the bottom of the micro-displacement actuator body 1 is spliced ​​together with the base 4, so as to determine the positions of the displacement amplification component 2 and the displacement prompt component 3. At this time, the movable block 23 is released to allow the movable block 23 to push against the lower surface of the movable platform of the micro-displacement actuator body 1.

[0044] The rotary drive mechanism of the micro-displacement actuator body 1 is started to operate, and the height of the top displacement output platform and the moving platform is changed. The movement of the moving platform will directly push the movable block 23 to move downward, and the movable block 23 will push the large gear 21 to rotate through the docking block 24. The large gear 21 is connected to the first pulley 22, so the first pulley 22 will rotate together with the large gear 21, and the angular velocity is equal.

[0045] The rotation of the first pulley 22 will drive the second pulley 31 through the transmission belt 25. However, since the radius of the second pulley 31 is smaller than that of the first pulley 22, and the linear speeds at the edges of the two pulleys are equal at this time, when the first pulley 22 rotates, the second pulley 31 will rotate at a larger angle, thereby completing the amplification of the displacement of the moving platform of the micro-displacement actuator body 1. The rotation of the second pulley 31 will synchronously drive the turntable 32 to rotate through the extension rod 36. The radius of the second pulley 31 is one fifth of the radius of the first pulley 22.

[0046] There are four prompting pieces 8 in total, and all are installed on the base 4, corresponding to four active ranges respectively. In the initial state, the prompting rod 33 is overlapped on the frontmost prompting piece 8. When the turntable 32 rotates, the position of the prompting rod 33 will be changed, so that it will be moved to other active ranges in the prompting piece 8, thereby realizing the amplification and estimation of the displacement amount of the displacement output platform in the micro-displacement actuator body 1.

[0047] Embodiment 2

[0048] according to Figure 1-Figure 6As shown, the displacement amplification component 2 includes a large gear 21, a first pulley 22, a movable block 23, a docking block 24 and a transmission belt 25. The first pulley 22 is fixedly mounted on one side of the large gear 21, one end of the movable block 23 is overlapped on the lower surface of the moving platform of the micro-displacement actuator body 1, the docking block 24 is rotatably mounted on one side of the movable block 23, one end of the docking block 24 is clamped in the tooth groove of the large gear 21, the transmission belt 25 is transmission-connected with the first pulley 22, a positioning bracket 7 is fixedly mounted on the upper surface of the base 4, and the large gear 21 and the first pulley 22 are both rotatably mounted on the outer wall of the positioning bracket 7.

[0049] In this embodiment, the docking block 24 is clamped between two protruding teeth on the large gear 21. When the movable block 23 moves, the docking block 24 will push the large gear 21 to rotate. Every time the large gear 21 rotates one degree, it will push the first pulley 22 to rotate one degree.

[0050] The large gear 21 and the first pulley 22 are both mounted on the positioning bracket 7 to determine their own positions and ensure their own stability without being affected by the micro-displacement actuator body 1. In addition, the large gear 21 is not a complete circle, and its bottom will not contact the base 4, thereby providing sufficient space for its rotation.

[0051] Embodiment 3

[0052] according to Figure 1-Figure 8 As shown, the displacement amplification component 2 includes a large gear 21, a first pulley 22, a movable block 23, a docking block 24 and a transmission belt 25. The first pulley 22 is fixedly mounted on one side of the large gear 21, one end of the movable block 23 is overlapped on the lower surface of the moving platform of the micro-displacement actuator body 1, the docking block 24 is rotatably mounted on one side of the movable block 23, one end of the docking block 24 is clamped in the tooth groove of the large gear 21, and the transmission belt 25 is connected to the first pulley 22. A positioning bracket 7 is fixedly mounted on the upper surface of the base 4, and the large gear 21 and the first pulley 22 are both rotatably mounted on the outer wall of the positioning bracket 7. A movable rotating rod 26 is rotatably connected to the outer wall of the positioning bracket 7, a torsion spring is fixedly connected between the movable rotating rod 26 and the positioning bracket 7, and a supporting rod 27 is slidably connected to the other end of the movable rotating rod 26. A positioning end 28 is fixedly installed on one side of the movable block 23, and the positioning end 28 is rotatably connected to one end of the supporting rod 27. A positioning plate 29 is fixedly installed on the other side of the movable block 23. A notch 211 is opened on one side of the movable block 23, and a limit block 210 is rotatably installed on one side of the positioning plate 29. The notch 211 is located at the junction of the movable block 23 and the limit block 210. A spring telescopic rod 212 is fixedly installed inside the limit block 210, and the other end of the spring telescopic rod 212 is fixedly connected to one end of the docking block 24.

[0053] In this embodiment, the movable rotating rod 26 is connected to the positioning bracket 7 via a torsion spring, and the supporting rod 27 is connected to the movable rotating rod 26 via a tension spring. When the movable block 23 starts to rotate, the movable block 23 can press the supporting rod 27 into the inside of the movable rotating rod 26 through the positioning end 28. After the supporting rod 27 enters the movable rotating rod 26, the height of the movable block 23 will change synchronously, and at this time, the movable rotating rod 26 will also rotate around the positioning bracket 7, so as to facilitate the movable block 23 to enter the bottom of the moving platform of the micro-displacement actuator body 1.

[0054] When the movable block 23 moves downward, the height of the docking block 24 will also change accordingly, and because the docking block 24 is clamped on the large gear 21, when the large gear 21 rotates, the angle of the docking block 24 itself will also change. The docking block 24 is connected to the limit block 210 through the spring telescopic rod 212, and its own position can be changed. The limit block 210 is rotatably connected to the positioning plate 29, and a notch 211 is also provided on the side of the movable block 23. Therefore, sufficient activity space can be provided for the rotation of the limit block 210, so that the docking block 24 can adapt to the rotation of the large gear 21 to avoid affecting the overall normal transmission.

[0055] Embodiment 4

[0056] according to Figure 1-Figure 6 As shown, the displacement prompting assembly 3 includes a second pulley 31, a turntable 32 and a prompting rod 33, and the transmission belt 25 is connected to the second pulley 31. The radius of the second pulley 31 is one-fourth to one-sixth of the radius of the first pulley 22. An extension rod 36 is fixedly installed on one side of the second pulley 31, and the other end of the extension rod 36 is fixedly connected to the turntable 32. The prompting rod 33 is rotatably installed on one side of the turntable 32, and the prompting rod 33 is located at the edge of the turntable 32. The other end of the prompting rod 33 overlaps the upper surface of the base 4. A prompting sheet 8 is fixedly installed on the upper surface of the base 4, and the prompting sheet 8 is located at the intersection of the base 4 and the prompting rod 33. A first support rod 6 is fixedly installed on the upper surface of the base 4, and the second pulley 31 is rotatably installed on one end of the first support rod 6. A second support rod 5 is rotatably connected to one side of the turntable 32, and the first support rod 6 and the second support rod 5 are located on the same straight line. One end of the extension rod 36 is threadedly connected to a connecting block 34, which is located at the junction of the second support rod 5 and the turntable 32. The second support rod 5 and the connecting block 34 are rotatably connected. An arc-shaped notch 35 is provided on one side of the connecting block 34, and one end of the prompt rod 33 is located on one side of the arc-shaped notch 35.

[0057] In this embodiment, the radius of the second pulley 31 is smaller than the radius of the first pulley 22, and the two pulleys are connected together by a transmission belt 25. Therefore, during operation, the linear velocity at the edge of the second pulley 31 will be consistent with the linear velocity at the edge of the first pulley 22, but the angular velocity of the second pulley 31 will be much greater than the angular velocity of the first pulley 22. When the first pulley 22 rotates within a smaller range, the prompt rod 33 will rotate within a larger range.

[0058] The second pulley 31 is mounted on the first support rod 6, and the turntable 32 is mounted on the second support rod 5. The second pulley 31 and the turntable 32 are connected together by an extension rod 36, and a connecting block 34 is provided at the intersection of the turntable 32 and the second support rod 5 to improve the stability of the turntable 32. The existence of the arc-shaped notch 35 ensures that the connecting block 34 will not affect the normal rotation of the prompt rod 33.

[0059] Embodiment 5

[0060] A method for determining a displacement of a micro-displacement actuator comprises the following steps:

[0061] Step 1: splice one end of the base 4 to one side of the fixed platform at the bottom of the micro-displacement actuator body 1, and then push the top of the movable block 23 to the lower surface of the moving platform of the micro-displacement actuator body 1. The movable block 23 is movably connected to the movable rotating rod 26 through the supporting rod 27 on the positioning end 28, and the movable rotating rod 26 is supported by the torsion spring, so it can be stably pressed against the lower surface of the moving platform of the micro-displacement actuator body 1. Then, start the motor in the micro-displacement actuator body 1 to make the displacement output platform produce a micro displacement. In this process, the moving platform connected to the displacement output platform will synchronously press down the movable block 23;

[0062] Step 2, the movable block 23 is connected to the large gear 21 through the docking card block 24, so when the movable block 23 moves downward, it will push the large gear 21 to rotate with the positioning bracket 7 as the center of the circle, and the docking card block 24 is connected to the limit block 210 through the spring telescopic rod 212, and a notch 211 is provided near the limit block 210, the notch 211 provides space for the rotation of the limit block 210, and the spring telescopic rod 212 provides a movable space for the movement of the docking card block 24, ensuring that the docking card block 24 can push the large gear 21 to rotate while not destroying the structural stability of the movable block 23 itself;

[0063] Step 3: When the large gear 21 rotates, it will drive the first pulley 22 to rotate at the same time. The first pulley 22 drives the second pulley 31 to rotate through the transmission belt 25. Since the radius of the first pulley 22 is greater than the radius of the second pulley 31, the rotation speed of the second pulley 31 is much greater than the rotation speed of the first pulley 22. When the first pulley 22 rotates once, the second pulley 31 rotates multiple units, thereby amplifying the displacement.

[0064] Step 4. In the initial situation, one end of the prompt rod 33 will overlap the prompt sheet 8 at the front end. There are four prompt sheets 8, which correspond to four prompt ranges respectively. At this time, the prompt rod 33 is overlapped in the first range. When the second pulley 31 rotates, the turntable 32 will be driven to rotate at the same angular velocity through the extension rod 36, thereby pulling the prompt rod 33 to move on the prompt sheet 8 and enter the second range, the third range or the fourth range, so as to facilitate the judgment of the displacement range of the micro-displacement actuator body 1.

[0065] The method of using and working principle of the device are as follows: first, press the movable block 23, press the supporting rod 27 into the interior of the movable rotating rod 26, so that the displacement amplification component 2 can enter the bottom of the moving platform, then splice the base 4 to the fixed platform of the micro-displacement actuator body 1, and then release the movable block 23. Under the action of the torsion spring, the top of the movable block 23 will push against the lower surface of the moving platform of the micro-displacement actuator body 1;

[0066] At this time, the micro-displacement actuator body 1 is started to operate, the height of the top displacement output platform and the moving platform changes, and the moving platform will push the movable block 23 to move downward. At this time, the docking block 24 will push the large gear 21 to rotate with the positioning bracket 7 as the center. During the rotation of the large gear 21, the presence of the notch 211 and the spring telescopic rod 212 will provide sufficient activity space for the docking block 24 to avoid the situation where the large gear 21 and the docking block 24 are stuck to each other.

[0067] The first pulley 22 is installed on the side of the large gear 21, and its angular velocity is the same as that of the large gear 21. When the large gear 21 rotates, the second pulley 31 is driven to rotate through the transmission belt 25 on the first pulley 22. At this time, the linear velocity at the edge of the second pulley 31 is the same as the linear velocity at the edge of the first pulley 22, but the angular velocity of the first pulley 22 is the same as that of the large gear 21. Therefore, when the large gear 21 rotates a unit angle, the second pulley 31 will rotate multiple unit angles, thereby amplifying the displacement of the displacement output platform on the micro-displacement actuator body 1.

[0068] The second pulley 31 drives the turntable 32 through the extension rod 36 to change the contact position between the prompt rod 33 and the prompt sheet 8. The prompt sheet 8 is provided with four sheets, corresponding to four activity ranges respectively. When the micro-displacement actuator body 1 has not yet operated, the prompt rod 33 is overlapped on the front end prompt sheet 8. When the turntable 32 rotates, the prompt rod 33 will move to other prompt sheets 8, thereby reflecting the different displacement ranges of the micro-displacement actuator body 1.

[0069] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A displacement determination device for a micro-displacement actuator, characterized in that: The micro-displacement actuator comprises a displacement amplification component (2), wherein the displacement amplification component (2) is movably connected to a micro-displacement actuator, wherein the micro-displacement actuator comprises a micro-displacement actuator body (1), wherein a rotary drive mechanism (1-4) is connected between a movable platform (1-1) and a fixed platform (1-3) of the micro-displacement actuator body (1), and the rotary drive mechanism (1-4) in the micro-displacement actuator body (1) is started to cause a displacement output platform (1-5) of the micro-displacement actuator body (1) to generate a micro-displacement, wherein the movable platform (1-1) and the displacement output platform (1-5) of the micro-displacement actuator body (1) are connected, wherein one end of the displacement amplification component (2) is movably connected to a displacement indication component (3), and the bottoms of the displacement amplification component (2) and the displacement indication component (3) are both fixedly connected to a base (4), and one end of the base (4) is spliced ​​to one side of the fixed platform (1-3) of the micro-displacement actuator body (1); The displacement amplification component (2) comprises a large gear (21), a first pulley (22), a movable block (23), a docking block (24) and a transmission belt (25), wherein the first pulley (22) is fixedly mounted on one side of the large gear (21), one end of the movable block (23) is overlapped on the lower surface of the moving platform of the micro-displacement actuator body (1), the docking block (24) is rotatably mounted on one side of the movable block (23), one end of the docking block (24) is clamped in the tooth groove of the large gear (21), and the transmission belt (25) is transmission-connected to the first pulley (22); The displacement prompting assembly (3) comprises a second pulley (31), a rotating disk (32) and a prompting rod (33); the transmission belt (25) is connected to the second pulley (31) in a transmission manner; the radius of the second pulley (31) is one-fourth to one-sixth of the radius of the first pulley (22); an extension rod (36) is fixedly mounted on one side of the second pulley (31); the other end of the extension rod (36) is fixedly connected to the rotating disk (32); the prompting rod (33) is rotatably mounted on one side of the rotating disk (32); the prompting rod (33) is located at the edge of the rotating disk (32); the other end of the prompting rod (33) is overlapped on the upper surface of the base (4); a prompting sheet (8) is fixedly mounted on the upper surface of the base (4); the prompting sheet (8) is located at the junction of the base (4) and the prompting rod (33); A positioning bracket (7) is fixedly mounted on the upper surface of the base (4), and the large gear (21) and the first pulley (22) are both rotatably mounted on the outer wall of the positioning bracket (7); A movable rotating rod (26) is rotatably connected to the outer wall of the positioning bracket (7), a torsion spring is fixedly connected between the movable rotating rod (26) and the positioning bracket (7), and the other end of the movable rotating rod (26) is slidably connected to a supporting rod (27); A positioning end head (28) is fixedly mounted on one side of the movable block (23), the positioning end head (28) being rotatably connected to one end of the supporting rod (27), and a positioning plate (29) is fixedly mounted on the other side of the movable block (23).

2. The displacement determination device of a micro-displacement actuator according to claim 1, characterized in that: A first support rod (6) is fixedly mounted on the upper surface of the base (4); the second pulley (31) is rotatably mounted on one end of the first support rod (6); one side of the turntable (32) is rotatably connected to a second support rod (5); the first support rod (6) and the second support rod (5) are located on the same straight line.

3. The displacement determination device of a micro-displacement actuator according to claim 2, characterized in that: One end of the extension rod (36) is threadedly connected to a connection block (34), the connection block (34) is located at the junction of the second support rod (5) and the rotating disk (32), and the second support rod (5) and the connection block (34) are rotationally connected.

4. The displacement determination device of a micro-displacement actuator according to claim 3, characterized in that: An arc-shaped notch (35) is provided on one side of the connection block (34), and one end of the prompt rod (33) is located on one side of the arc-shaped notch (35).

5. The displacement determination device of a micro-displacement actuator according to claim 4, characterized in that: A notch (211) is provided on one side of the movable block (23); a limit block (210) is rotatably mounted on one side of the positioning plate (29); and the notch (211) is located at the junction of the movable block (23) and the limit block (210).

6. The displacement determination device of a micro-displacement actuator according to claim 5, characterized in that: A spring telescopic rod (212) is fixedly installed inside the limit block (210), and the other end of the spring telescopic rod (212) is fixedly connected to one end of the docking clamp block (24).

7. A method for determining the displacement of a micro-displacement actuator, characterized in that: A displacement determination device using a micro-displacement actuator as described in any one of claims 1 to 6 comprises the following steps: S1. Splice one end of the base (4) to one side of the fixed platform at the bottom of the micro-displacement actuator body (1), and then push the top of the movable block (23) to the lower surface of the moving platform of the micro-displacement actuator body (1). The movable block (23) is movably connected to the movable rotating rod (26) through the supporting rod (27) on the positioning end (28), and the movable rotating rod (26) is supported by the torsion spring. The movable block (23) can be pushed against the lower surface of the moving platform of the micro-displacement actuator body (1). Then, the rotary drive mechanism in the micro-displacement actuator body (1) is started, so that the displacement output platform of the micro-displacement actuator body (1) generates a micro displacement. In this process, the moving platform connected to the displacement output platform will synchronously press down the movable block (23); S2, the movable block (23) is connected to the large gear (21) through the docking block (24), so when the movable block (23) moves downward, it will push the large gear (21) to rotate with the positioning bracket (7) as the center of the circle, the docking block (24) is connected to the limit block (210) through the spring telescopic rod (212), and a notch (211) is provided near the limit block (210), the notch (211) provides space for the rotation of the limit block (210), and the spring telescopic rod (212) provides a movable space for the movement of the docking block (24), so as to ensure that the docking block (24) pushes the large gear (21) to rotate without destroying the structural stability of the movable block (23) itself; S3, when the large gear (21) rotates, it will drive the first pulley (22) to rotate at the same time, and the first pulley (22) drives the second pulley (31) to rotate through the transmission belt (25). Since the radius of the first pulley (22) is greater than the radius of the second pulley (31), the rotation speed of the second pulley (31) is much greater than the rotation speed of the first pulley (22). When the first pulley (22) rotates a unit amount, the second pulley (31) will rotate a corresponding unit amount, thereby playing a role in amplifying the displacement; S4. In the initial state, one end of the prompt rod (33) overlaps the prompt sheet (8) at the front end. The prompt sheet (8) is provided with four sheets, corresponding to four prompt ranges respectively. At this time, the prompt rod (33) overlaps within the first range. When the second pulley (31) rotates, the extension rod (36) drives the turntable (32) to rotate at the same angular velocity, thereby pulling the prompt rod (33) to move on the prompt sheet (8) and enter the second range, the third range or the fourth range, so as to facilitate the determination of the displacement range of the micro-displacement actuator body (1).

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